Development of a Risk-based Inspection Scheduling Methodology for Audit Inspections of Railroad Curves on High Speed Main Line Track PDF Download
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Author: Truxton James Boyce
Publisher:
ISBN: 9781369594959
Category :
Languages : en
Pages : 222
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Book Description
Similarly, risk-based track geometry inspection schedules optimize inspection location by the identification of high risk track locations in order to optimize maintenance decisions and resources while at the same time reducing the probability of a derailments at high-risk locations. The optimization of inspection location, in conjunction with inspection frequency, is critical for optimizing the overall inspection process aimed at optimized resource allocation with targeted inspection schedules. In this thesis, audit inspections apply a similar quantitative risk-based relationship with the analysis of location specific risk factors, with the goal of optimizing the audit inspection locations of walking track inspections, based on the analysis of current risk factors. The primary goal of the application of the quantitative analysis of current track conditions is a developed curve prioritization index that targets high-risk locations and determines the inspection interval to optimize the use of resources while minimizing risk. This approach allows the inspector to focus on high risk locations to reduce the risk of a train derailment at those locations.
Author: Lori Shefchik Bhaskar
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
I provide theory-based causal evidence on the effects of risk-based regulatory inspections, modeled after the PCAOB's, on auditor behavior in a multi-client setting where clients with relatively higher misstatement risk (“higher-risk” clients) have a higher risk of being inspected than clients with relatively lower misstatement risk (“lower-risk” clients). I predict and find inspections increase auditor effort, but only for higher-risk clients. Inspections impair auditors' decision performance for lower-risk clients relative to a regime without inspections and relative to higher-risk clients within an inspections regime, ceteris paribus. Theory-based process model results show inspections increase auditors' perceived inspection risks, which increase auditor effort for higher-risk clients, but also increase auditors' task-related anxiety resulting in decreased decision performance for lower-risk clients. Notwithstanding the previously-identified benefits, this study identifies potential unintended consequences of riskbased regulatory inspections.
Author: Martha Lawrence
Publisher: World Bank Publications
ISBN: 1464814252
Category : Business & Economics
Languages : en
Pages : 101
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Book Description
Over the past decade, China has built 25,000 km of dedicated highspeed railway—more than the rest of the world combined. What can we learn from this remarkable experience? China’s High-Speed Rail Development examines the Chinese experience to draw lessons for countries considering investing in high-speed rail. The report scrutinizes the planning and delivery mechanisms that enabled the rapid construction of the high-speed rail system. It highlights the role of long-term planning, consistent plan execution, and a joint venture structure that ensures active participation of provincial and local governments in project planning and financing. Traffic on China’s high-speed trains has grown to 1.7 billion passengers a year. The study examines the characteristics of the markets for which high-speed rail is competitive in China. It discusses the pricing and service design considerations that go into making high-speed rail services competitive with other modes and factors such as good urban connectivity that make the service attractive to customers. One of the most remarkable aspects of the Chinese experience is the rapid pace of high-quality construction. The report looks at the role of strong capacity development within and cooperation among China Railway Corporation, rail manufacturers, universities, research institutions, laboratories, and engineering centers that allowed for rapid technological advancement and localization of technology. It describes the project delivery structures and incentives for delivering quality and timely results. Finally, the report analyzes the financial and economic sustainability of the investment in high-speed rail. It finds that a developing country can price high-speed rail services affordably and still achieve financial viability, but this requires very high passenger density. Economic viability similarly depends on high passenger density.
Author: Daniel Pulido
Publisher: World Bank Publications
ISBN: 146481273X
Category : Business & Economics
Languages : en
Pages : 845
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Book Description
Cities across the globe are looking to develop affordable, environmentally friendly, and socially responsible transportation solutions that can meet the accessibility needs of expanding metropolitan populations and support future economic and urban development. When appropriately planned and properly implemented as part of a larger public transportation network, urban rail systems can provide rapid mobility and vital access to city centers from surrounding districts. High-performing urban rail services, when carefully approached as development projects, can help enhance quality of life by giving citizens access to employment opportunities, essential services, urban amenities, and neighboring communities. The purpose of this Handbook is to synthesize and disseminate knowledge to inform the planning, implementation, and operations of urban rail projects with a view towards: -- Emphasizing the need for early studies and project planning; -- Making projects more sustainable (economically, socially, and environmentally); -- Improving socioeconomic returns and access to opportunities for users; -- Maximizing the value of private participation, where appropriate; and -- Building capacity within project implementing and managing institutions This Handbook provides experiential advice to tackle the technical, institutional, and financial challenges faced by decision makers considering urban rail projects. It brings together the expertise of World Bank staff and the input of numerous specialists to synthesize international 'good practices' and recommendations that are independent of commercial, financial political, or other interests. The material presented is intended as an honest-broker guide to maximize the impact and manage the challenges of urban rail systems in cities in both developed and developing countries. Rather than identify a single approach, this Handbook acknowledges the complexities and context necessary when approaching an urban rail development by helping to prepare decision makers to ask the right questions, consider the key issues, perform the necessary studies, apply adequate tools, and learn from international good practice all at the right time in the project development process.
Author: Ken Skorseth
Publisher:
ISBN:
Category : Gravel roads
Languages : en
Pages : 112
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Book Description
The purpose of this manual is to provide clear and helpful information for maintaining gravel roads. Very little technical help is available to small agencies that are responsible for managing these roads. Gravel road maintenance has traditionally been "more of an art than a science" and very few formal standards exist. This manual contains guidelines to help answer the questions that arise concerning gravel road maintenance such as: What is enough surface crown? What is too much? What causes corrugation? The information is as nontechnical as possible without sacrificing clear guidelines and instructions on how to do the job right.
Author: United States. Federal Railroad Administration. Office of Safety
Publisher:
ISBN:
Category : Railroad accidents
Languages : en
Pages : 200
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Book Description
Author:
Publisher: Transportation Research Board
ISBN: 0309258243
Category : Technology & Engineering
Languages : en
Pages : 695
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Book Description
TCRP report 155 provides guidelines and descriptions for the design of various common types of light rail transit (LRT) track. The track structure types include ballasted track, direct fixation ("ballastless") track, and embedded track. The report considers the characteristics and interfaces of vehicle wheels and rail, tracks and wheel gauges, rail sections, alignments, speeds, and track moduli. The report includes chapters on vehicles, alignment, track structures, track components, special track work, aerial structures/bridges, corrosion control, noise and vibration, signals, traction power, and the integration of LRT track into urban streets.
Author: João Pombo
Publisher: Springer
ISBN: 9783319616261
Category : Science
Languages : en
Pages : 0
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Book Description
This volume brings together scientific experts in different areas that contribute to the Railway Track & Transportation Engineering challenges, evaluate the State-of-the-Art, identify the shortcomings and opportunities for research and promote the interaction with the industry. In particular, scientific topics that are addressed in this volume include railway ballasted track degradation/settlement problems and stabilization/reinforcement technologies, switches and crossings and related derailments causes, train-induced vibrations and mitigation measures, operations, management and performance of ground transportation, and traffic congestion and safety procedures. This volume is part of the proceedings of the 1st GeoMEast International Congress and Exhibition on Sustainable Civil Infrastructures, Egypt 2017.
Author: United States. Department of Transportation
Publisher:
ISBN:
Category : Freight cars
Languages : en
Pages : 72
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Book Description
Author: Ian Savage
Publisher: Springer Science & Business Media
ISBN: 146155571X
Category : Business & Economics
Languages : en
Pages : 236
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Book Description
The American public has a fascination with railroad wrecks that goes back a long way. One hundred years ago, staged railroad accidents were popular events. At the Iowa State fair in 1896, 89,000 people paid $20 each, at current prices, to see two trains, throttles wide open, collide with each other. "Head-on Joe" Connolly made a business out of "cornfield meets" holding seventy-three events in thirty-six years. Picture books of train wrecks do good business presumably because a train wreck can guarantee a spectacular destruction of property without the messy loss of life associated with aircraft accidents. A "train wreck" has also entered the popular vocabulary in a most unusual way. When political manoeuvering leads to failure to pass the federal budget, and a shutdown is likely of government services, this is widely called a "train wreck. " In business and team sports, bumbling and lack of coordination leading to a spectacular and public failure to perform is also called "causing a train wreck. " A person or organization who is disorganized may be labelled a "train wreck. " It is therefore not surprising that the public perception of the safety of railroads centers on images of twisted metal and burning tank cars, and a general feeling that these events occur quite often. After a series of railroad accidents, such as occurred in the winter of 1996 or the summer of 1997, there are inevitable calls that government "should do something.
Author: Interborough Rapid Transit Company
Publisher:
ISBN:
Category : Local transit
Languages : en
Pages : 16
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Book Description
